OK, let's crack this. We're given 759 and our task is to multiply it by 45. Essentially, we'll be adding 759 to itself 45 times.
Step 1: 0 + 759 = 759
Step 2: 759 + 759 = 1518
Step 3: 1518 + 759 = 2277
Step 4: 2277 + 759 = 3036
Step 5: 3036 + 759 = 3795
Step 6: 3795 + 759 = 4554
Step 7: 4554 + 759 = 5313
Step 8: 5313 + 759 = 6072
Step 9: 6072 + 759 = 6831
Step 10: 6831 + 759 = 7590
Step 11: 7590 + 759 = 8349
Step 12: 8349 + 759 = 9108
Step 13: 9108 + 759 = 9867
Step 14: 9867 + 759 = 10626
Step 15: 10626 + 759 = 11385
Step 16: 11385 + 759 = 12144
Step 17: 12144 + 759 = 12903
Step 18: 12903 + 759 = 13662
Step 19: 13662 + 759 = 14421
Step 20: 14421 + 759 = 15180
Step 21: 15180 + 759 = 15939
Step 22: 15939 + 759 = 16698
Step 23: 16698 + 759 = 17457
Step 24: 17457 + 759 = 18216
Step 25: 18216 + 759 = 18975
Step 26: 18975 + 759 = 19734
Step 27: 19734 + 759 = 20493
Step 28: 20493 + 759 = 21252
Step 29: 21252 + 759 = 22011
Step 30: 22011 + 759 = 22770
Step 31: 22770 + 759 = 23529
Step 32: 23529 + 759 = 24288
Step 33: 24288 + 759 = 25047
Step 34: 25047 + 759 = 25806
Step 35: 25806 + 759 = 26565
Step 36: 26565 + 759 = 27324
Step 37: 27324 + 759 = 28083
Step 38: 28083 + 759 = 28842
Step 39: 28842 + 759 = 29601
Step 40: 29601 + 759 = 30360
Step 41: 30360 + 759 = 31119
Step 42: 31119 + 759 = 31878
Step 43: 31878 + 759 = 32637
Step 44: 32637 + 759 = 33396
Step 45: 33396 + 759 = 34155

So, 759*45 = 34155